HomeIndustry news Digital Isolator for IGBT Gate Drive for Motor Applications

Digital Isolator for IGBT Gate Drive for Motor Applications

May 22, 2015 By admin Comments are Off , , , ,

Analog Devices, Inc. (ADI) today introduced the ADuM4135 isolated IGBT gate driver to improve electric motor energy efficiency, reliability and system-control performance in industrial motor control applications. Incorporating ADI’s award-winning iCoupler® digital isolator technology, the ADuM4135 ensures safety and reliability through proven galvanic isolation in a single package while delivering the industry’s best combination of CMTI (common-mode transient immunity) at 100 kV/µs and propagation delay of 50 ns (typical).

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The ADuM4135 allows customers to comply with IE3 and IE4 motor efficiency standards, consistent with the industry trend toward higher-frequency switching technologies for both motor control and grid-inverters. Safety features include integrated Miller clamping and desaturation detection.

System designers can take advantage of the ADuM4135 gate driver’s low propagation delay and skew to minimize dead time between low-side/high-side switching, minimizing losses and improving overall system performance. The breakthrough CMTI performance and low propagation delay also support new power switch technologies, including SiC and GaN, which utilize higher switching frequencies in systems with increased transients. The ADuM4135 is available in a 16-lead, wide-body SOIC package and provides 8-mm creepage and clearance.

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ADuM4135 Isolated Gate Driver features include: 4-A peak drive output capability; Output power device resistance < 1ohm; Desaturation protection; Isolated desaturation fault reporting; Soft-shutdown on fault; Miller clamp output with gate sense input; Isolated fault and ready functions; and Low propagation delay (50 ns typical)/ delay skew (15 ns typical). Samples of the ADuM4135 are available now, with production scheduled for June 2015. In lots of 1,000 pieces, these parts cost $2.26 in a 16-lead wide-body SOIC.

source: http://www.powerpulse.net/story.php?storyID=32269

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